GSBS Student Publications

Student Author(s)

Suewei Lin; Sen-Lin Lai

GSBS Program

Neuroscience

Publication Date

2010-01-22

UMMS Affiliation

Department of Neurobiology; Tzumin Lee Lab; Graduate School of Biomedical Sciences, Neuroscience Program

Document Type

Article

Disciplines

Neuroscience and Neurobiology

Abstract

Numb can antagonize Notch signaling to diversify the fates of sister cells. We report here that paired sister cells acquire different fates in all three Drosophila neuronal lineages that make diverse types of antennal lobe projection neurons (PNs). Only one in each pair of postmitotic neurons survives into the adult stage in both anterodorsal (ad) and ventral (v) PN lineages. Notably, Notch signaling specifies the PN fate in the vPN lineage but promotes programmed cell death in the missing siblings in the adPN lineage. In addition, Notch/Numb-mediated binary sibling fates underlie the production of PNs and local interneurons from common precursors in the lAL lineage. Furthermore, Numb is needed in the lateral but not adPN or vPN lineages to prevent the appearance of ectopic neuroblasts and to ensure proper self-renewal of neural progenitors. These lineage-specific outputs of Notch/Numb signaling show that a universal mechanism of binary fate decision can be utilized to govern diverse neural sibling differentiations.

DOI of Published Version

10.1242/dev.041699

Source

Development. 2010 Jan;137(1):43-51. Link to article on publisher's site

Journal/Book/Conference Title

Development (Cambridge, England)

Related Resources

Link to Article in PubMed

PubMed ID

20023159

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